<abstract xmlns="http://www.w3.org/1999/xhtml"><p>This paper describes the influence of magnetization of an instrument current transformer (ICT) core on ICT errors, and presents a procedure for demagnetizing an ICT. The dependence of ICT errors on the magnetization of the ICT core for different magnetic materials is given in the paper, together with a detailed procedure for ICT demagnetization. The results of experiments are summarized, and conclusions are drawn on when ICT demagnetization is necessary, and on how to prevent the destruction of an ICT due to its winding being punctured.</p></abstract>

This paper describes the influence of magnetization of an instrument current transformer (ICT) core on ICT errors, and presents a procedure for demagnetizing an ICT. The dependence of ICT errors on the magnetization of the ICT core for different magnetic materials is given in the paper, together with a detailed procedure for ICT demagnetization. The results of experiments are summarized, and conclusions are drawn on when ICT demagnetization is necessary, and on how to prevent the destruction of an ICT due to its winding being punctured.

Demagnetization of instrument transformers before calibration

Department of Measurement, Faculty of Electrical Engineering

Laboratory of Fundamental Metrology in Prague

Journal of Electrical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Demagnetization of instrument transformers before calibration"}

This paper describes the influence of magnetization of an instrument current transformer (ICT) core on ICT errors, and presents a procedure for demagnetizing...

Demagnetization of instrument transformers before calibration

Publié en ligne: 31 déc. 2018

Pages: 426 - 430

Reçu: 13 févr. 2018

DOI: https://doi.org/10.2478/jee-2018-0066

Mots clés
instrument current transformer, AC current, ratio error, phase displacement, magnetization

© 2018 Karel Draxler et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Demagnetization of instrument transformers before calibration

Publié en ligne: 31 déc. 2018

Pages: 426 - 430

Reçu: 13 févr. 2018

DOI: https://doi.org/10.2478/jee-2018-0066

Mots clésinstrument current transformer, AC current, ratio error, phase displacement, magnetization

© 2018 Karel Draxler et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
instrument current transformer, AC current, ratio error, phase displacement, magnetization